package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     */
    @GetMapping("/list")
    public Result<List<DishVO>> list(Long categoryId) {
        log.info("根据分类id查询菜品，id: {}", categoryId);
        // 判断redis中是否已经有该分类下的菜品缓存数据
        String key = "dishCategory_" + categoryId;
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if(list != null && list.size() > 0) {
            // 已经有该缓存数据，直接返回
            return Result.success(list);
        }

        // 没有该缓存数据，先查绚
        DishDTO dishDTO = new DishDTO();
        dishDTO.setCategoryId(categoryId);
        dishDTO.setStatus(StatusConstant.ENABLE);//查询起售中的菜品

        list = dishService.listWithFlavor(dishDTO);
        // 将查询结果更新到缓存中
        redisTemplate.opsForValue().set(key, list);

        return Result.success(list);
    }

}
